Implemented Check for updates which removs the last shell exec from web ui, and reimplemented db_update switch to update_cli.php

js/auto_reload.js

@@ -0,0 +1,34 @@
+/**
+ * Reload a page that is waiting on something cron will do.
+ *
+ * Opt in by putting data-itflow-reload-seconds="<n>" on the element that says so - the
+ * "Checking for updates" alert on Maintenance > Update is the first user. Rendering that
+ * attribute is what starts the timer, so a view that is not waiting costs one failed
+ * querySelector.
+ *
+ * Deliberately an attribute rather than an inline <script>: inline scripts are the thing
+ * standing between ITFlow and a CSP without unsafe-inline, and this would have been another.
+ */
+(function () {
+    'use strict';
+
+    document.addEventListener('DOMContentLoaded', function () {
+
+        const waiting = document.querySelector('[data-itflow-reload-seconds]');
+
+        if (!waiting) {
+            return;
+        }
+
+        const seconds = parseInt(waiting.dataset.itflowReloadSeconds, 10);
+
+        if (!Number.isFinite(seconds) || seconds < 1) {
+            return;
+        }
+
+        setTimeout(function () {
+            window.location.reload();
+        }, seconds * 1000);
+
+    });
+})();